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UStudy aims to provide Educational Content for Polytechnic College students based on the latest K Scheme syllabus of Tamil Nadu. |
Keywords/Reserved words :
- It has predifined meaning and cannot be used for any other purpose in a C program.
- 32 keywords are available in C.
- They are always written in lower case.
| .auto | .else | .register | .union |
| .break | .enum | .return | .unsigned |
| .case | .extern | .short | .void |
| .char | .float | .signed | .volatile |
| .const | .for | .sizeof | .while |
| .continue | .goto | .static | . |
| .default | .if | .struct | . |
| .do | .int | .switch | . |
| .double | .long | .typedef | . |
Identifiers :
An identifier is a name used for a variable, constant or function.
Rules :
- The first character should be an alphabet or on underscore(_).
- Subsequent characters may be any combination of letters, digits or underscore.
- Special characters are not allowed except underscore.
- It can contain up to 31 characters.
- Keywords cannot be used as identifiers.
Example :
mspvl, m2spvl - Valid
2mspvl, auto - Invalid
Keywords - Video:
Identifiers - Video:
